The sea is great. What sometimes comes with it—not so much.
The sun, warm sand, and sea water are among the best parts of summer. But along with them come some risks we rarely think about in advance: contaminated water, insufficient hygiene, food left out for hours in the heat, and microorganisms that can turn a vacation into a few unpleasant days.
The most common health problem related to swimming water is diarrhea. The cause is usually swallowing even a small amount of water containing microorganisms such as norovirus, Giardia, Cryptosporidium, Shigella, or certain types of E. coli.
How do microorganisms reach us?
Water does not need to look dirty to be contaminated. Microscopic causes of intestinal infections cannot be seen with the naked eye.
Contamination can be related to wastewater, sewage overflow, stormwater runoff, animal waste, or the presence of many people in the water. Swimming immediately after heavy rain, near pipes and drainage channels, or in shallow, poorly circulating water can increase the risk of contact with intestinal pathogens.
Infection does not always occur directly from seawater. Microorganisms can get on your hands from sand, public toilets, handles, sun loungers, or children's toys, and then be transferred to your mouth and food.
1. Do not swallow seawater
One of the most important and simplest precautions is: do not swallow the water you swim in.
Even a small amount of contaminated water can contain enough microorganisms to cause gastrointestinal symptoms. This is especially important for young children, who are more likely to swallow water while playing.
2. Avoid swimming after heavy rain
After heavy rainfall, rainwater can carry contaminants from streets, soil, sewage systems, and drains into the sea. Therefore, it is wise to avoid swimming immediately after heavy rain, especially near drainage pipes, ports, and areas with poor water circulation.
Also monitor official announcements about water quality. Signs temporarily restricting swimming are not recommendations to be ignored.
3. Wash your hands before eating
Wet wipes are convenient but do not fully replace washing with soap and water. This is especially important for microorganisms like norovirus and Cryptosporidium, against which hand sanitizers may not be sufficiently effective.
When possible, wash your hands with soap for at least 20 seconds after using the toilet, changing diapers, and before eating. Hand sanitizer can be an additional measure but is not a complete substitute for washing.
4. Do not underestimate food at the beach
In hot weather, bacteria in food can multiply much faster. We must be especially careful with meat, dairy products, eggs, sandwiches, cut fruits, salads, and ready meals.
Cold food should be stored in a cooler bag with enough ice or coolers. Perishable products should not be left out for more than two hours, and at temperatures above approximately 32°C — no more than one hour.
The main rules of the World Health Organization are simple: maintain cleanliness, separate raw from cooked food, cook sufficiently, keep food at safe temperatures, and use safe water and quality ingredients.
5. Do not enter the water when you have diarrhea
A person with active diarrhea should not enter the sea, pool, or other swimming water. This reduces the risk of spreading microorganisms to others.
The same rule applies to children. Swim diapers do not provide a reliable barrier against microscopic infection agents.
What is the role of probiotics?
The probiotic does not purify contaminated water, does not destroy all pathogens, and does not replace hygiene. The most important preventive measures remain safe water, clean hands, and proper food storage.
Probiotics can be part of a broader approach to maintaining the gut microbiome and digestive balance. However, scientific results are specific to particular strains and combinations. Systematic analyses show that certain probiotic strains and blends can reduce the risk of traveler's diarrhea compared to placebo, but the effect varies significantly between products, and available research is still limited.
In other words: not every probiotic is the same, and more billions are not an automatic guarantee of better clinical results. The strains used, their combination, the amount of live microorganisms, and their ability to reach the gut environment all matter.
What distinguishes GutExpert® Advanced Probiotic Complex?
GutExpert® Advanced Probiotic Complex is designed as a high-concentration and broad-spectrum formula, not as a standard single- or two-strain product.
50 carefully selected probiotic strains
The formula combines representatives from different groups of microorganisms, including:
Lactobacillus
Bifidobacterium
Streptococcus thermophilus
Lactococcus
Bacillus/Weizmannia
Saccharomyces boulardii
This allows a comprehensive approach to different parts of the gut microbiota, rather than relying on just one type of microorganism.
200 billion CFU in the daily dose
The formula provides 200 billion colony-forming units in the recommended daily dose. This positions it as a high-concentration probiotic supplement intended for periods when more intensive support for intestinal balance is sought.
Combination of bacteria and probiotic yeast
GutExpert® includes not only various lactic acid bacteria but also Saccharomyces boulardii. For certain strains of this species, clinical data exist related to traveler's diarrhea, although results from a specific studied strain cannot automatically be transferred to every other formula.
Delayed-release capsule
The capsule is designed to help protect the contents as they pass through the stomach and reach the intestinal environment.
Clean and practical formula
According to the product specification, GutExpert® Advanced Probiotic Complex is free from added sugar, lactose, gluten, and GMOs. It is produced in the EU in a GMP and HACCP certified facility.
These features do not prove that the product is “better than absolutely all other probiotics”, but they show why it stands out as one of the most complex formulas in terms of number of strains, diversity, and declared concentration.
When should you see a doctor?
Most mild gastrointestinal discomforts subside, but medical help is needed in cases of:
blood in the stool;
high fever;
frequent or continuous vomiting;
severe abdominal pain;
signs of dehydration;
diarrhea lasting more than two to three days.
In children, elderly people, pregnant women, and those with chronic illnesses, dehydration can occur faster, and consultation should not be delayed.
Better prepared than unpleasantly surprised
No product can replace good hygiene and sensible behavior at the beach. The best approach is a combination of:
careful choice of bathing spots, safe food, clean hands, avoiding swallowing water, and daily care for intestinal balance.
GutExpert® Advanced Probiotic Complex offers 50 strains, 200 billion CFU, and a broad-spectrum formula, designed for people who don’t want to settle for the minimum.
Sun protection is not the only concern for summer.
Explore GutExpert® Advanced Probiotic Complex and its full composition here.